题目内容

用[α-32P]dATP标记一个DNA片段,需用()。

A. 多核苷酸激酶
B. DNA连接酶
C. DNA聚合酶
D. 逆转录酶
E. 磷酸化酶

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反义RNA的作用机制不包括()。

A. 特异地切割靶RNA
B. 阻止核蛋白体与靶mRNA结合
C. 改变靶RNA的构象
D. 抑制翻译
E. 与靶RNA形成局部双链

The man with()strength could lift a heavy rock without any difficulty.

A. powerful
B. strong
C. intelligent
D. phenomenal

We all()violence against women, old and young.

A. unfair
B. against
C. condemn
D. persist

Hearing a()noise in the backyard, Pamela went there to have a look.

A. cracking
B. crack
C. cracked
D. cracker

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